Anyways, we're closing up our northern retreat this weekend. I plan to keep my boat in the water until closer to the end of October however. I'd like to be able to get up north for the odd day to squeeze in a couple more wakeboarding sets. When we close up our trailer, we put anti-freeze through all the lines, in the toilet, in the bathtub, and in the washing machine. Our trailer is 40 feet long... I'm not sure how wide. It may be something like 12-15 feet wide. Anyways, it'd be nice to be able to still goin inside the trailer in between wakeboard sets to chill out for a bit. I'm really not sure if this is safe though. You can smell the anti-freeze when you go in there. I'm not sure if sitting in there for a couple of hours would be dangerous to the health or not. I've asked a couple of people this question, and no one really thinks it would be a problem. I thought I would at least ask around and get a few more opinions on this.

Um I'm not sure if it's "eco-friendly". It doesn't say that anywhere on the jug. It's just your basic plumbing anti-freeze from Canadian Tire. It says it ideal for RVs, boats, cottages and pools. It contains ethanol, and it says to use it in a well ventilated area (which concerns me a bit). Is this not the safest one to use in terms of exposure? Should I get an eco-friend one in the future?

How much antifreeze do you use? Do you try and flush the lines out after you pour the antifreeze in or do you just pour the antifreeze in and call it good? My grandparents do the same thing with their trailer and I've never noticed any excessive fumes after we load it up with antifreeze. I think we typically use 2 gallons for the whole trailer (3 sinks, 1 shower, 1 washer). Then again, I see that you're in Canada, so the stuff you have to use is probably a little more potent than what we use in Oklahoma.

Raf, ya I was concerned when I read that as well. However no one I talk to is telling me it's bad to breath in.

Brett, you raise a good point. We typically force the anti-freeze into the lines using a small utility pump. This gets pumped in from outside of the trailer. Once we turn the pump on, we open the kitchen sink taps until we see the anti-freeze coming out of it. Then we move to the washroom and open those taps until we see the anti-freeze come out of those taps. After that, we dump some anti-freeze into the toilet. Then we open the portable dishwasher and put some in there. Maybe the smell is coming from extra that just sits in the toilet and dishwasher.